片段事务如何在导航UI上工作？

Question

我正在使用Android的导航底部，并且我试图了解部分片段如何在其上工作。什么时候应该在交易中添加片段？ appBarConfiguration 会添加它们吗？

Nav Java代码

    public class BottomNavActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.bottom_nav_activity);
        BottomNavigationView navView = findViewById(R.id.nav_view);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        // Passing each menu ID as a set of Ids because each
        // menu should be considered as top level destinations.
        AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
                R.id.navigation_logout, R.id.navigation_dispositivos, R.id.navigation_contactos)
                .build();
        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
        NavigationUI.setupWithNavController(navView, navController);
    }
}